1. Option -F defined in manual as common option but eix-sync does't supports it. 2. This option especially useful exactly in this utility - for mailing colored output from cron job. Patch attached.
Created attachment 156405 [details, diff] Support -F option in eix-sync
The option -F is listed under "common options for eix, diff-eix, update-eix" which is correct. For usage from a cron job you can export FORCE_USECOLORS=true. In eix svn trunk (>=eix-0.12.6) you can also put a line "!!export ..." into /etc/eix-sync.conf to force such things.
Since eix-0.13.0 with the '!!' feature in /etc/eix-sync.conf is now in the tree, I mark the bug as fixed (grep the manpage for FORCE_USECOLORS).